File Doc Category Size Date Package
JQLAST.java API Doc Glassfish v2 API 9262 Fri May 04 22:35:06 BST 2007 com.sun.jdo.spi.persistence.support.sqlstore.query.jqlc

JQLAST

java.lang.Object
- persistence.antlr.BaseAST
  - persistence.antlr.CommonAST

public class JQLAST extends CommonAST

This class represents a node in the intermediate representation (AST) used by the query compiler. It provides - line info - column info - type info (object of class util.type.Type): the semantic analysis calculates the type of an expression and adds this info to each node. - RetrieveDesc info - value: this allows to add an arbitrary value to a node. This is used in compile time calulation of constant expression.

author: Michael Bouschen
version: 0.1

Fields Summary
private static char
SEPARATOR
private static String
INDENT
protected int
line
protected int
column
protected com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type
jqlType
protected com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc
rd
protected Object
value
Constructors Summary
public JQLAST()
public JQLAST(int type, String text, com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type jqlType)
initialize(type, text, jqlType);
public JQLAST(int type, String text, com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type jqlType, Object value)
initialize(type, text, jqlType, value);
public JQLAST(Token t)
initialize(t);
public JQLAST(JQLAST ast)
initialize(ast);
Methods Summary
public int getColumn()
return column;
private java.lang.String getIndent(int level)
Returns the indent specified by level.
StringBuffer buf = new StringBuffer(); for (int i = 0; i < level; i++) { buf.append(INDENT); } return buf.toString();
public com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type getJQLType()
return jqlType;
public int getLine()
return line;
public com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc getRetrieveDesc()
return rd;
public static java.lang.String getRetrieveDescRepr(com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc rd)
Returns a string representation of the spceified RetrieveDesc.
StringBuffer buf = new StringBuffer(); buf.append("RD:"); //NOI18N if (rd == null) { buf.append("null"); //NOI18N } else { String pcClassName = rd.getPersistenceCapableClass().toString(); if (pcClassName.startsWith("class ")) //NOI18N buf.append(pcClassName.substring(6)); else buf.append(pcClassName); buf.append("@"); //NOI18N buf.append(System.identityHashCode(rd)); } return buf.toString();
public java.lang.String getTreeRepr(java.lang.String title)
Returns a full string representation of this JQLAST. The returned string starts with the specified title string, followed by the string representation of this ast, followed by the string representation of the child ast nodes of this ast. The method dumps each ast node on a separate line. Child ast nodes are indented. The method calls toString to dump a single node w/o children.
return
string representation of this ast including children.
return title + this.getTreeRepr(0);
private java.lang.String getTreeRepr(int level)
Helper method for getTreeRepr.
StringBuffer repr = new StringBuffer(); // current node repr.append(SEPARATOR); repr.append(getIndent(level)); repr.append(this.toString()); // handle children for (JQLAST node = (JQLAST)this.getFirstChild(); node != null; node = (JQLAST)node.getNextSibling()) { repr.append(node.getTreeRepr(level+1)); } return repr.toString();
public java.lang.Object getValue()
return value;
public void initialize(int type, java.lang.String text, com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type jqlType, java.lang.Object value)
setType(type); setText(text); setJQLType(jqlType); setValue(value);
public void initialize(persistence.antlr.collections.AST ast)
initialize((JQLAST)ast);
public void initialize(com.sun.jdo.spi.persistence.support.sqlstore.query.jqlc.JQLAST ast)
setType(ast.getType()); setText(ast.getText()); setLine(ast.getLine()); setColumn(ast.getColumn()); setJQLType(ast.getJQLType()); setValue(ast.getValue()); setRetrieveDesc(ast.getRetrieveDesc()); setValue(ast.getValue());
public void initialize(int type)
setType(type);
public void initialize(int type, java.lang.String text)
setType(type); setText(text);
public void initialize(persistence.antlr.Token t)
setType(t.getType()); setText(t.getText()); setLine(t.getLine()); setColumn(t.getColumn());
public void initialize(int type, java.lang.String text, com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type jqlType)
setType(type); setText(text); setJQLType(jqlType);
public void setColumn(int column)
this.column = column;
public void setJQLType(com.sun.jdo.spi.persistence.support.sqlstore.query.util.type.Type jqlType)
this.jqlType = jqlType;
public void setLine(int line)
this.line = line;
public void setRetrieveDesc(com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc rd)
this.rd = rd;
public void setValue(java.lang.Object value)
this.value = value;
public java.lang.String toString()
Returns a string representation of this JQLAST w/o child nodes.
return
a string representation of the object.
StringBuffer repr = new StringBuffer(); Object jqlType = getJQLType(); RetrieveDesc rd = getRetrieveDesc(); // token text repr.append((getText() == null ? "null" : getText())); //NOI18N repr.append(" ["); //NOI18N // token type repr.append(getType()); // line/column info repr.append(", ("); //NOI18N repr.append(getLine() + "/" + getColumn()); //NOI18N repr.append(")"); //NOI18N // type info repr.append(", "); //NOI18N repr.append(jqlType); // RetrieveDesc info repr.append(", "); //NOI18N repr.append(getRetrieveDescRepr(rd)); repr.append("]"); //NOI18N return repr.toString();